CVE-2026-82290: Chainlit

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Chainlit through 2.12.0 fails to validate ownership of feedback records in PUT and DELETE endpoints. Authenticated attackers can delete or modify other users' feedback by supplying arbitrary feedback identifiers, corrupting human-rating data used for model evaluation.

Affected products

• Chainlit Chainlit: up to and including 2.12.0

Published 2026-08-28. Last modified 2026-09-16.